Needle assembly

ABSTRACT

A needle assembly has a needle hub that has a body to which are formed two plates at opposite sides thereof in a parallel relationship. The plates have respective upper edges and lower edges that lie substantially along respective planes, so that the needle hub may be stably placed onto a surface by means of the respective edges. A partition is formed orthogonally proximate to the front ends of the parallel plates. The partition and the parallel plates together provide upper and lower three point stable supports for the needle hub. A notch at the partition provides a guided line of sight to the tip of the needle for the user. The connector at the proximal portion of the needle hub has a non-conventional configuration that allows it to mate only with a counterpart special connector of a fluid conveying device that has a complementary non-conventional configuration.

CROSS REFERENCES TO RELATED APPLICATIONS

This application is a continuation-in-part application of applicationSer. No. 13/567,122 filed on Aug. 6, 2012.

FIELD OF THE INVENTION

The present invention relates to needle assemblies, and particularly toa needle assembly that has a specially designed hub that enables a userto firmly grasp and manipulate the needle for insertion to a patient.The connector end of the hub has a non-conventional configuration thatprevents the needle hub from connecting to conventional counterpartconnectors.

BACKGROUND OF THE INVENTION

Some of the prior art spinal and epidural needles tend to be somewhatdifficult to manipulate by a surgeon or anesthesiologist, when insertingthe needle into the patient. The prior art does disclose some needlehubs that have means for the user to grasp. Such prior art includes U.S.Pat. Nos. 6,027,480, D378,405, D421,119 and D469,870. However, thoseneedle hubs do not provide means to prevent the user from inadvertentlymaking contact with the needle or guide the insertion of the needle tothe patient, or have a connector that prevents mis-connection. Theinstant invention needle assembly is an improvement of the prior artneedle assembles.

SUMMARY OF THE PRESENT INVENTION

The needle assembly of the instant invention has a needle hub that has amain body having a distal portion with a closed distal end to which aneedle extends and a proximal portion to which there is an openedproximal end for connection to a fluid store such as a syringe or afluid line. The body is a substantially cylindrical body with the distalportion sloping downwards from where it merges with the proximal portiontowards the closed distal end. Two substantially rectangular plates areformed on opposite sides of the body that bridges the proximal anddistal portions. The plates are bonded to the body in a parallelrelationship, with the respective upper edges and the respective loweredges being substantially correspondingly coplanar. Accordingly, as therespective upper edges and respective lower edges of the two plates liealong corresponding planes, the needle hub, when placed onto a flatsurface with either the respective upper edges or the respective loweredges, would stay put without rolling.

Proximate or adjacent to the two plates there is a partition at thedistal portion of the needle hub body formed orthogonally to thelongitudinal axis of the needle, and therefore orthogonal to the twoplates that are bonded to opposite sides of the main body. The partitionhas its top edge in substantial coplanar alignment with the upper edgesand its bottom edge in substantial coplanar alignment with respectivelower edges of the two plates. As a result, upper and lower three pointstable supports are provided by the respective edges of the two platesand the partition at their respective upper edges or their respectivelower edges. This configuration ensures that when the needle assembly isput on a flat surface, it will not move due to unintentional rolling. Inaddition to providing additional support, the partition, beingpositioned at the distal portion of the needle hub, prevents the fingersof the user from inadvertently coming into contact with the needle thatextends from the closed distal end.

There is a notch formed at the partition extending from its upper edgeinwardly towards the body of the hub to provide a line of sight thatextends to the bevel tip of the needle, which may include an orificethat opens on the side of the needle. The notch at the partitionprovides a line of sight from the needle tip to the space between theupper portion of the two plates which a user can use as a sight guide toinsert the needle into the patient.

The opened proximal end of the needle hub forms the connector thatconnects the needle assembly to the fluid source. The proximal end isconfigured to have two protuberances that extend on opposite sides atthe proximal portion of the body. In addition, the opening at theproximal end is configured such that the connector of the needle hub ismatable only to a counterpart connector that has a complementaryconfiguration. Also formed at the proximal end is a keyway that guidesthe insertion of a stylet into the needle to prevent the coring of theneedle during its insertion into the patient.

BRIEF DESCRIPTION OF THE FIGURES

The present invention will become apparent and the invention itself willbe best understood with reference to the following description of thepresent invention taken in conjunction with the accompanying drawings,wherein:

FIG. 1 is a top view of the needle assembly of the instant invention;

FIG. 2 is the bottom view of the inventive needle assembly;

FIG. 3 is one side view of the inventive needle assembly;

FIG. 4 is another side view of the inventive needle assembly;

FIG. 5 is a perspective front view of the inventive needle assembly;

FIG. 6 is a perspective rear view of the inventive needle assembly;

FIG. 7a is a perspective view of the needle assembly of the instantinvention having the needle of a stylet partially inserted thereinto;

FIG. 7b is another perspective view of the needle assembly of theinstant invention having inserted therein the needle of the stylet;

FIG. 8 is an illustration of the needle assembly of the instantinvention, and other components that may be used in conjunctiontherewith;

FIG. 9 is another view of the needle hub shown in FIG. 4 amplified toillustrate the special non-conventional configuration at its connectorend;

FIG. 10 is a semi-cross sectional view of the inventive needle assemblyhaving a connector of a non-conventional configuration lockingly coupledto a syringe having a special counterpart connector;

FIG. 11 shows in perspective view a slip fit type needle hub of theneedle assembly of the instant invention that has a non-conventionalconfiguration; and

FIG. 12 is a perspective semi-cross sectional view of the needle hub ofFIG. 10 fittingly mated to a special counterpart nose cone connector ofa syringe.

DETAILED DESCRIPTION OF THE INVENTION

With reference to the figures, needle assembly 2 of the instantinvention is shown to have a needle hub 4 that includes a distal portion6 and a proximal portion 8. It should be appreciated that althoughdesignated as such in FIG. 2, there is no actual line of demarcationbetween distal portion 6 and proximal portion 8. Distal portion 6 has aclosed distal end 6 a, whereas proximal portion 8 has an opened proximalend 8 a. Needle hub 4 has a main body 4 a that is substantiallycylindrical along proximal portion 8 and slopes or inclines downwards ina conical fashion towards distal end 6 a along distal portion 6.

Two flats or plates 10 a and 10 b are bonded to body 4 a bridging distalportion 6 and proximal portion 8. Plates 10 a and 10 b each aresubstantially rectangular in shape, with their respective upper edges 10a 1, 10 b 1 and their respective lower edges 10 a 2 and 10 b 2, slightlycurved inwardly to form a slight concave configuration. For the instantinvention, the respective upper edges 10 a 1 and 10 b 1 of plates 10 aand 10 b are deemed to lie substantially co-planarly along an upperplane, designated by dotted line 18 in FIG. 3; and the respective loweredges 10 a 2 and 10 b 2 of plates 10 a and 10 b are deemed to liesubstantially co-planarly along a lower plane, designated by dotted line20 in FIG. 3. Thus, the respective upper edges form one rest support forthe needle hub, if the needle hub were to be placed on a flat surfaceusing the respective upper edges 10 a 1 and 10 b 1. Likewise, therespective lower edges 10 a 2 and 10 b 2 form another rest supportwhereby the needle can be placed onto a flat surface by using thoseedges. Once placed onto a flat surface, the respective upper and loweredges each provide support for the needle hub, and prevent the needlehub from rolling. As best shown in FIGS. 1 and 2, plates 10 a and 10 bare formed in parallel to each other in a relationship that defines aspace 10 c between the two plates.

At the closed distal end 6 a there is extending from needle hub 4 aneedle 12. For the embodiment shown in the figures, needle 12 may be aspinal or epidural needle that has a closed end 12 a and a side openingor orifice 14 proximate to the closed end 12 a where through fluid fromthe needle may traverse. Although a needle with a closed end and a sideorifice is shown, it should be appreciated that a spinal or epiduralneedle having an opened end tip is equally applicable for the instantinvention.

At distal portion 6 between the respective front edges 10 a 3 and 10 b 3of plates 10 a and 10 b and distal end 6 a there is integrally formed atneedle hub 4 a partition plate, or simply a partition 16, orthogonallyto the longitudinal axis 22 of the needle assembly. Partition 16therefore is orthogonal to plates 10 a and 10 b, and provides a stop forthe fingers (defined to include the thumb) of a clinician user, if theuser is grasping plates 10 a and 10 b with his fingers, for example withhis thumb and fore finger. As partition 16 prevents the fingers of theuser from inadvertently making contact with needle 16, plates 10 a and10 b prevent the needle from rolling between the fingers of theclinician user to ensure that the orientation of the tip of the needlemay continuously be monitored by the user.

Partition 16 is substantially rectangular and has an upper edge 16 a anda lower edge 16 b. As best shown in FIG. 3, upper edge 16 a of plate 16lies in a coplanar relationship with edges 10 b 1 and 10 a 1 of plates10 b and 10 a, respectively, along plane 18. Similarly, the lower edge16 b of partition 16 lies co-planarly with respective lower edges 10 a 2and 10 b 2 of plates 10 a and 10 b along plane 20. See FIGS. 3 and 4. Asa result, top edge 16 a of partition 16 and top edges 10 a 1 and 10 b 1of plates 10 a and 10 b together form a multiple point stable supportfor the needle hub 4, were the needle hub to be rested on a flat surfaceby means of those edges. Likewise, bottom edge 16 b of partition 16 andrespective bottom edges 10 a 2 and 10 b 2 of plates 10 a and 10 btogether provide a multiple point stable support to ensure that theneedle hub would not move once it has been placed onto a flat surfacesupported by those lower edges.

Partition 16 has a notch 16 b that extends from its top edge 16 ainwardly towards the longitudinal axis 22. Notch 16 is formed such thatit provides a line of sight from needle tip 12 a to space 10 c definedbetween plates 10 a and 10 b at the top portion of the needle hub. Notch16 b may act as a sight guide for the user to ensure that the bevel endof the needle, and/or also the side orifice 14, be correctly insertedinto the patient. By grasping plates 10 a and 10 b with his thumb andfore finger and biasing the front portions of those digits against theside of partition 16 that faces plates 10 a and 10 b, the user canreadily manipulate the needle since the rolling of the needle betweenthe fingers of the user is prevented as discussed above. And by usingpartition 16 as a push plate, with the aid of notch 16 b, theorientation of the tip of the needle is continuously monitored as theuser guidedly inserts the needle into the patient, so as to ensure thecorrect placement of the tip of the needle in the patient.

The connector of needle hub 4 is provided at the end of proximal portion8 close to the opened proximal end 8 a. As shown, two protuberances 24 aand 24 b are provided at opposite sides of the connector at proximalportion 8. The protuberances are configured such that they are engagableonly with a counterpart connector that has complementary channels orgrooves for accepting them. Also, the opening 26 (FIG. 6) at proximalend 8 a has a dimension that allows the connector to only mate with acounterpart non-conventional connector that has a complementarydimensioned opening, so that needle hub 4 will not connect to acounterpart connector that has a conventional luer connector defined byInternational Standard Organization (ISO) standards. The dimension(s) ofan exemplar non-conventional connecter that may be used for theconnector portion of the needle assembly of the instant invention may begleaned from co-pending application 61/457,879 (Atty Docket No.0109/0037) filed on Jun. 27, 2011. The disclosure of the '879application is incorporated by reference to the disclosure of theinstant application.

A keyway 28 that extends from proximal end 8 a inwardly to body 4 aalong the longitudinal axis 22 provides a guide, at proximal portion 8,for accepting a stylet 30 (FIGS. 7a and 7b ) that includes a styletneedle 30 a and its hub 30 b. As shown, stylet hub 30 b has a finger 30c that slidably fits into keyway 28, when stylet hub 30 b is fitted tothe connector portion of needle hub 4. There are also slots 30 b, onlyone being shown, that allows stylet hub 30 b to fit onto proximalportion 8 without interference from protuberances 24 a and 24 b. Withstylet 30 fully inserted into hub 4, per shown in FIG. 7b , side orifice14 of needle 12, per shown in the exploded view 32 of FIG. 7b , isblocked by stylet needle 30 a, so that there would not be any coring byneedle 12, when needle 12 is inserted into the patient. Once the needleis properly placed within the patient, stylet 30 is removed, so thatmedicament may be conveyed to the patient by means of side orifice 14 ofneedle 12. In the case of an open ended spinal needle, the stylet blocksthe opened end of the needle while it is inserted in the needle. Itshould be appreciate that even though a spinal needle is shown by thefigures, an epidural needle (which has an opened end tip) may also befitted with the inventive needle hub disclosed herein.

FIG. 8 shows the various components that may be used with the needleassembly 2 of the instant invention. As shown, there is a syringe 36provided with a receptacle end 36 a having a configuration complementaryto the connector portion of needle hub 4. A cap 38 that has a connectorportion 38 a having a configuration similar to the connecter portion ofneedle hub 4 is provided to cap the receptacle end 36 a of syringe 36,prior to its use, so as to prevent possible contamination thereof.Syringe 36 may be used with a filter needle 34 that has a connectorportion 34 a dimensionally configured to be connectable to receptacleend 36 a of syringe 36.

In use, cap 38 is removed from syringe 36. Needle 34 is then connectedto syringe 36 so that medicament may be withdrawn from a vial (notshown) via needle 34 into syringe 36. Thereafter, needle 34 isdiscarded. Prior to or after the medicament has been withdrawn from thevial into syringe 36, the surgeon or anesthesiologist would insert theneedle 12 of needle assembly 2 into the patient, for example spinally orepidurally. Once the needle 12 is correctly positioned in the patient,and after syringe 36 is filled with the appropriate medicament, needlehub 4 and syringe 36 are matingly coupled together so that themedicament stored in the syringe may be conveyed into the patient, in amanner well known in the art for example by pushing the plunger of thesyringe. Although FIG. 8 illustrates one exemplar embodiment procedurefor utilizing the needle assembly, it should be appreciated that theneedle assembly of the instant invention may be an epidural needlehaving a connector for connection with a syringe for injection, or anepidural needle utilized to place an epidural catheter into the patient,with the epidural catheter connected to a fluid store such as a fluidline or a fluid cassette after the removal of the epidural needle as iswell known in the art. The medicament may then be dispensed through thecatheter to the patient by a syringe or an infusion pump.

With reference to FIG. 6 and the relevant disclosure form theabove-noted incorporated by reference application No. 61/457,879, nowapplication Ser. No. 13/517,782 filed on Jun. 14, 2012, the exemplarneedle hub 4 has a female connector at its proximal end 8 that has agiven or particular dimension(s), feature(s) and/or configuration thatallows it to be connected to a counterpart connector such as the maleconnector 36 a of syringe 36 (FIG. 8) that has a complementarydimension(s), feature(s) and/or configuration to the proximal portion 8of needle hub 4 of the needle assembly 2. Connector 36 a is an integralextension of syringe 36. Thus, male connector 36 a, which includes anose cone extension to be discussed further with reference to FIG. 10,and the female connector at needle hub 4 have complementary features,dimensions and/or configurations that allow those connectors to matinglycoupled, connected or fitted to each other, but not with standardconnectors such as luer connectors that have conventional configurationsmanufactured in accordance with ISO (International StandardOrganization) Standards 591-1 and 594-2. For ease of discussion,henceforth it should be assumed that the term “configuration” isinclusive of the dimensions and other features of the being discussedconnectors that either enable or prevent those connectors and theircounterparts (male and female) from matingly connect or couple to eachother.

The needle hub 4 shown in FIG. 6 is reproduced in a semi-see-throughview of FIG. 9. As shown, the proximal portion 8 of needle hub 4 has anelongate substantially cylindrical body, represented by main body 4 athat has an opening 26 at its proximal end 8 b. The elongate body 4 ahas two bosses or protrusions 24 a and 24 b extending from oppositesides of its outer surface 4 a 1. Opening 26 forms the mouth of athrough bore 27 that extends into body 4 a. Although not shown, as iswell known, bore 27, possibly reduced in diameter, extends throughoutthe rest of the needle hub 4 to meet with the cannula of needle 4 sothat a through passage extends from opening 26 to the close end 6 a atthe distal end of the distal portion 6 of hub 4, and from thereestablishing a passageway with needle 12 (FIGS. 1 and 2) that extends tothe tip of the needle.

Further with reference to FIG. 9, through bore 27 is shown to be taperedand defined by a circumferential wall 4 b whose inner circumferentialsurface 4 b 1 forms a cross-sectional dimension that has a decreasingconical cross-section from opening 26 to the distal opening 26 aproximately at the end of proximal portion 8. The exemplar dimensionsfor the non-conventional configuration at the proximal portion 8 ofneedle hub 4 may be referenced with respect to the above notedapplication Ser. No. 13/517,782, and will be discussed in greater detailrelative to the special connector or connector fitting of a fluidconveying device, for example syringe 36 shown in FIG. 8, that has acounterpart complementary configuration to the non-conventionalconfiguration of needle hub 4. The connector fitting of needle hub 4shown in FIG. 9 may be referred to as a lock type connector due toprotrusions 24 a and 24 b extending from its outer circumferentialsurface.

With reference to FIG. 10, the exemplar syringe 36 illustrated in FIG. 8is shown to be lockingly coupled to the lock type needle hub 4 shown inFIG. 9. In particular, syringe 36 has a connector fitting 36 a that is aspecial connector having a counterpart configuration that iscomplementary to the non-conventional configuration at proximal portion8 of needle hub 4. As shown, special connector 36 a includes acircumferential wall 36 a 1 that integrally extends from the body 39 ofsyringe 36. Also extending from the distal end of body 36 is a taperednose cone or nose cone extension 36 c having a through bore 40 thatextends from its distal end 36 d into chamber 42 of syringe 36. Nosecone extension 36 d is surrounded or circumscribed by wall 36 a 1, whichhas two spiral grooves 36 b 1 and 36 b 2 at its inner surface withcorresponding openings at distal end 36 d formed to accept protrusions24 a and 24 b, respectively, of hub 4. When syringe 36 is coupled toneedle hub 4, a through passage is established between chamber 42 andbore 27 of hub 4 via bore 40.

The nose 36 c 1 of nose cone extension 36 c is configured to have across-section that is slightly smaller than cross-section 26 a ofopening 26 of hub 4, so that nose cone extension 36 c is readilyinsertable through opening 26. Moreover, the outer wall 36 c 2 oftapered nose cone extension 36 c is configured to have an increasingconical cross-section from nose 36 c 1 that complements with thedecreasing conical configuration of counter-tapered bore 27 of needlehub 4, so that nose cone extension 36 c can fittingly insert into bore27 of hub 4 to prevent fluid leak from bore 27. Furthermore, withprotrusions 24 a and 24 b of hub 4 threadingly mated to theircorresponding grooves 36 b 1 and 36 b 2, needle hub 4 and specialconnector 36 a of syringe 36 are lockingly coupled to each other. As wasdiscussed above, given that needle hub 4 has a non-conventionalconfiguration and special connector 36 c of syringe 36 has aconfiguration that is complementary to the non-conventionalconfiguration of needle hub 4, the respective connectors of needle hub 4and syringe 36 each are not connectable to counterpart conventionalconnector fittings.

FIG. 11 shows a slip fit type connector of the instant invention thathas a non-conventional configuration. The non-conventional configurationslip fit connector 4 may have the same components and dimensions as thelock type connector shown in FIG. 9 but without the bosses orprotrusions 24 a and 24 b. Thus, the needle hub 4 of FIG. 11 isfittingly matable to syringe 36 solely by the mating of nose coneextension 36 c into bore 27 at the proximal portion 8 of hub 4. Same asthe lock type connector discussed above, the outer circumferential wall36 c 2 of nose cone extension 36 c and the inner circumferential wall 4b 1 of the proximal portion 8 that defines bore 27 are configured tohave complementary conical increasing/decreasing (ortapered/counter-tapered) configurations that enable nose cone extension36 c to form fittingly slide fit into bore 27 and be frictionally heldthereat to establish a fluid tight connection, so that medicament fluidmay be conveyed from syringe 36 to the needle extending from needle hub4.

Note that although circumferential wall 36 a 1 that circumscribes nosecone extension 36 c is shown in FIG. 12, in practice, a circumferentialwall is not needed fora slip fit type syringe. Furthermore, as shown inFIG. 12, the slip type connector fitting of hub 4 may also be used witha lock type syringe insofar as proximal portion 8 of the connector has across-sectional dimension that is slightly smaller than thecross-sectional dimension of the inner circumferential wall 36 a 1′ ofthe outer wall 36 a 1. Thus, per shown in FIG. 12, the innercircumferential wall 4 b 1 of the needle hub connector and the outercircumferential wall 36 c 2 of the nose cone extension 36 c may befrictionally mated to each other, while the outside circumferential wall4 b 2 at the proximal portion 8 of the needle hub and the innercircumferential wall 36 a 1′ of the circumferential wall 36 a 1 ofconnector 36 a are not in contact with each other, when the slip fittype connector of FIG. 11 is mated to a locked type syringe 36.

Exemplar dimensions of the inventive connectors may be as follows.Opening 26 of the inventive connector 4, shown for example to be femalein FIG. 9, has been configured with a taper from approximately 4% to 6%,preferably approximately 5% or 3° (3 degrees), as compared to a taper of6% or 3.44° for the conventional luer female connectors manufacturedunder the afore-noted ISO standards. As a result, a conventional maleluer connector produced in accordance with the afore-noted ISO standardsthat otherwise mates readily with a conventional female luer connectorcould not mate with the inventive female connector, as the configurationof the conventional male luer connector is not complementary to theconfiguration of the inventive female connector. This is due to theopening 26 and the bore 27 tapering therefrom being configured not toaccept the fitting of a conventional luer male connector. There may beother configurations, for example the cross-sectional dimension or thewidth 26 a of the mouth of opening 26, or the thickness of the wall 4 bof the connector that would prevent the inventive female connector ofhub 4 from mating with a counterpart male luer connector of aconventional configuration.

With reference to FIGS. 10 and 12, the exemplar special male connector36 c is shown to have a nose cone extension or nose portion 36 c thathas a taper from approximately 4% to 6%, preferably 5% or 3° outwardscomplement to that of the approximately 5% or 3° inward taper of thecounter exemplar bore 27 of the female connector of hub 4 discussedabove. Also, the outer circumferential wall 36 c 2 of nose coneextension 36 c has a width that is slightly smaller than the width forthe inner circumferential surface 4 b 1 of the mating portion 4 a of thefemale connector 4, so that nose cone extension 36 c can readily fitinto the bore 27 of the female connector. The respective widths of thecircumferential wall of cone extension 36 c and the innercircumferential surface of mating portion 4 a of female connector 4 ofthe instant invention may be dimensioned to be different from(preferably smaller than but could be greater than) those widths orcross sections of the conventional luer connectors noted above so as toact as another feature that prevents the inventive non-conventionalconfiguration connectors from mating to counterpart connectors ofconventional configurations.

Inasmuch as the present invention is subject to many variations,modifications and changes in detail, it is intended that the matterdescribed throughout this specification and shown in the accompanyingdrawings be interpreted as illustrative only and not in a limitingsense. Accordingly, it is intended that the invention be limited only bythe spirit and scope of the hereto appended claims.

1-20. (canceled)
 21. A needle assembly, comprising: a needle hubincluding a main body extending along a longitudinal axis having an openproximal end and a closed distal end; a needle having a distal tipincluding an aperture and a proximal end connected to the closed end ofsaid hub to establish a through passage between the aperture of theneedle and the open end of the hub; wherein said hub includes two platespositioned at opposite sides of the main body, said plates each havingan upper edge and a lower edge, the upper and lower edges of each ofsaid plates slightly curved inwardly to form a concave configuration foreach plate, said two plates bonded along the main body in parallel toeach other, the respective top edges of said two plates lyingsubstantially co-planarly along an upper plane and the respective bottomedges of said two plates lying substantially co-planarly along a lowerplane so that the respective top edges form one rest support and therespective bottom edges form another rest support for said needle hubwhen said needle hub is placed onto a flat surface using the respectivetop edges or the respective lower edges of said two plates.
 22. Theneedle assembly of claim 21, further comprising a partition positionedorthogonal to and separating said two plates from the closed distal endof said hub whereto the proximal end of the needle is connected.
 23. Theneedle assembly of claim 22, wherein said partition is substantiallyrectangular and has an upper and a lower edge, the upper edge of saidpartition lies in a coplanar relationship with the respective upperedges of said two plates and the lower edge of said partition lies in acoplanar relationship with the respective lower edges of said twoplates, so that the upper edges of said partition and said two platesform a stable multiple edge support for said needle hub and the loweredges of said partition and said two plates form another stable multipleedge support for said needle hub.
 24. The needle assembly of claim 21,wherein said needle hub comprises a proximal portion that includes asubstantially cylindrical body having an outer surface and twoprotrusions extending from opposite sides of the outer surface at orproximate to the proximal end to engage with a counterpart connector ofa fluid conveying device.
 25. The needle assembly of claim 29, whereinthe fluid conveying device comprises a syringe, a fluid line or a fluidstore.
 26. The needle assembly of claim 21, wherein the needle comprisesa spinal or epidural needle.
 27. The needle assembly of claim 21,further comprising a notch at said hub to provide a line of sight fromthe distal tip of the needle to a space defined between said two platesto guide a user to correctly insert the bevel end of the needle into thepatient.
 28. The needle assembly of claim 27, wherein the notch extendsfrom a top edge of said partition.
 29. A needle assembly comprising: aneedle hub including a body extending along a longitudinal axis havingan open proximal end and a distal portion including a closed distal end;a needle extending from the closed distal end; and two plates bonded toopposite sides of the body in parallel to each other, said two plateseach having a top edge and a bottom edge, each of the top and bottomedges of said two plates slightly curved inwardly to form a concaveconfiguration so that the two ends of the respective top edges of saidtwo plates lie substantially co-planarly along an upper plane to formone rest support and the two ends of the respective bottom edges of saidtwo plates lie substantially co-planarly along a lower plane to formanother rest support.
 30. The needle assembly of claim 29, furthercomprising: a partition bonded to said body orthogonal to said twoplates, said partition having a top edge that lies substantiallycoplanarly along the upper plane and a bottom edge that liessubstantially coplanarly along the lower plane so that the ends of thetop edges of said two plates and the top edge of said partition form amultiple edge top support and the ends of the bottom edges of said twoplates and the bottom edge of said partition form a multiple edge bottomsupport for said needle hub when said needle hub is placed onto a flatsurface using the respective top edges or the respective bottom edges.31. The needle assembly of claim 29, wherein the body of said hubcomprises a substantially cylindrical body having an outer surface andan opening at the proximal end to a bore through the cylindrical body,two protrusions extending from opposite sides of the outer surfaceproximate to or at the proximal end to engage with a counterpartconnector of a fluid conveying device.
 32. The needle assembly of claim29, wherein the fluid conveying device comprises a syringe, a fluid bag,a fluid line or a fluid cassette.
 33. The needle assembly of claim 29,wherein the needle comprises a spinal or an epidural needle.
 34. Theneedle assembly of claim 30, further comprising a notch at said hub toprovide a line of sight from the distal tip of the needle to a spacedefined between said two plates to guide a user to correctly insert thebevel end of the needle into the patient.
 35. The needle assembly ofclaim 34, wherein the notch extends from a top edge of said partition.36. A method of manufacturing a needle assembly, comprising: providing aneedle hub including a body extending along a longitudinal axis havingan open proximal end and a distal portion including a closed distal end;extending a needle from the closed distal end; bonding two plates toopposite sides of the body in parallel to each other, said two plateseach having a top edge and a bottom edge; and configuring each of thetop and bottom edges of said two plates slightly curved inwardly to forma concave configuration so that the two ends of the respective top edgesof said two plates lie substantially co-planarly along an upper plane toform one rest support and the two ends of the respective bottom edges ofsaid two plates lie substantially co-planarly along a lower plane toform another rest support.
 37. The method of claim 36, furthercomprising: bonding a partition to said body orthogonal to said twoplates, said partition having a top edge that lies substantiallycoplanarly along the upper plane and a bottom edge that liessubstantially coplanarly along the lower plane so that the ends of thetop edges of said two plates and the top edge of said partition form amultiple edge top support and the ends of the bottom edges of said twoplates and the bottom edge of said partition form a multiple edge bottomsupport for said needle hub when said needle hub is placed onto a flatsurface using the respective top edges or the respective bottom edges.38. The method of claim 37, further comprising: forming a notch at saidhub to provide a line of sight from the distal tip of the needle to thespace between said two plates to guide a user to correctly insert thebevel end of the needle into the patient.
 39. The method of claim 38,further comprising: forming the notch at a top edge of said partition.